Hair curl pin device



March 13, 1956 DE AMBRA E. HERRING HAIR CURL PIN DEVICE Filed Oct. 12, 1955 INVENTOR. DE ANBRA ELDORSIE HERE/N6 Mar/4y United States Patent l l DE ICE. D Ambm E o si Har ies; Sen ir ns ssoi f: Applica ion October 12. 1 95 Se ia No- 3855193 7 (9. lit-%).

h v n on ela e to a imp oved ha r c l p device. i

The especial feature of this invention is to hold a hair cu l firmly u ently in cl s re at on to, he scalp. d in the process of setting.

The art calls for an initial technique of: forming a number of curls, Each curl is initially. usually formed by selecting a plurality O hair strands and spiraling them with the fingers. The curl must be rigidly maintained in position and not allowed to, uncurl or be disturbed during the period of: setting. A present method of holding a curl while setting is to place he. curl between the shafts of a bobby pin, then to afiix another across the curl at an angle difllerent than the first. This. two "bobbypin" procedure does not securely hold the curl, is bulky, time consuming and uncomfortable. Thus. tfar hair pin .de: vices failed to supply adequate support and pressure atthe periphery and center ofi'the curl, and are. complicated: and costly to ultimately market and are therefore not practicable. Some presently. used devices. interfere with aeration through the curl and considerably retard drying during setting because 05 bulky metal structures overlying the curl.

In my invention the manner in which I arrange four crossed arms to overlie the curl coil, in the. form of a narrow X allows them to. lie over and upon the. hair curl at four positions along the curl coil circumference, there.- by adding greater protection and rigidity to the curl while setting. I H I The curl pin which is a thin steel comprises four upper arms in combination with an integral lower arm. More specifically, the upper arms of the curl pin consist of four narrow thin arms designedan d stamped in the form of a narrow X and an integi-al lower arm bent under one of the upper arm members in such a manner as to form a spring clamping action against the curl positioned between. The lower arm, an extension of an upper X arm, is bent around in such a manner that it lies under and parallel with the upper arm from which it is a part. The lower arm lying in the same plane as the upper arm extends slightly beyond the total length of the upper arm. A spring force is maintained between the arms of the clamp which has the effect of securely holding the curl and preventing its unwinding. From the central axis, at the crossing point of the X arms, the degree of divergence of the arms is sufiicient so that support is placed on the curl coil at four points around the curl coil circumference. Where the four arms join at the cross junction, this area is substantially flat, therefore central balanced pressure is maintained evenly at the axis of the curl coil. The X arm, not extended or bent, acts as a convenient means to open the curl pin clamp and thereby avoids damage to fingernails or teeth when the pin is positioned or removeda common fault with the bobby pin.

The curl pin is best constructed when stamped from thin 7 spring carbon steel, however, other materials may be used, such as Bakelite or other resins.

Qth r advan ages e ppa ent as d sc se i my slesor ption an in he follow g r wi he ein;

Fig. 1 is a diagrammatic view which illustrates the en: ti e p cu l pi in en o Ei 2 d nea es a os d our-l pin as ro ate a vi w, so shows, t e ma nerin which the ampins e f t is p si due, t h low r s gle a n Pressin pwar a in h un er ur ace of e. nne n!) members.

Fig- 3. 1s a per pe tive iew of: h pin nd t e la on i bears to a c rl coil n ros e tion.- The Plan Vi w a so shows the manner in which the slightly curved under arm more firmly holds the curl coil at its center. The central p r ion f th cu l coil is l s t c than the pe ipheral ringlet.

Fig. 4; illustrates the. manner in which curl pins are ap: plied for th pu p s of h l ing a number ofour during they process. ofsetting the curls.

Referring to the drawing more specifically, my invention illustrates in Fig. 1 an improved curl pin device con.- sisting Of four arms or shafts 1, 2, 3, and 4 arranged in the form of a narrow X. If an imaginary circle were described about the extended arm tips 1, 2, 3 and 4, from the central axis point 8, it will be found that the degree of divergence between the arms will vary. For example, starting clockwise from the tip of arm 4, approximately hir y d gr epa a t p. ofarm 4 bef r arm 1 is r ached. From he t p of rm 1., o hu d ed. a d tw ntydeg ee p te a m 1 m rm 2, hir y eg e s. epa: at m 2 f o r n g n ne h ndr an twen y degrees separate arm 3 from arm 4, While the degrees 9 difference between the arms are intended to, illusr. irat he m s fav r e Po i ns of he rms, or h purpose of hold n h c rl coil, t s. not; t e int nti n of the invention to; confine the degrees of variance between the. arms to precise measurement. A dilferent de-, gree ofseparation between the. arms should not; be construed as a departure from the original intention oi the inyention. Arm 2 is extended to become arm 5 when ben backwar at 6- T s. a lows arm 5 to bepos i nesl inn ia e y ben a h a a ne t e. sa ax a pa all l a ms 2. nd 4.. T e. p o arm. 5 e t n s epp oxi: ma lyoner igh f an inch eyond h t p. of r 4.. T e. xte i of t p. fa m .5, fa i itat the openi g of; th cu p n w e e p. o rm 1 is us in, combination wi h e p f rm an p s eis appli d in opposite directions with the fingers between the arm tips, The ease of op ng h p n, is import n the pe wi h which the pin may be applied to the haircurl; also, it eliminates. amag to. fi ger n ls and te t Again referring to Fig. 1, the tip ends of the arms 1 and 4 are bent slightly upward from the long axis of these members. This bend is in the form of a very slight arc, rising approximately two degrees from the long axis of arms 1 and 4 when viewed in lateral perspective. The termination of this arc from the arm tip backwards would be V of an inch. Conversely, the tip end of arm 3 presents an arc whose radius is downward from the long axis of the arm. The bend of the downward arc begins from the arm tip and extends backward Of an inch. The downward declination is three degrees. The rise at the tip ends of arms 1 and 4 tends to facilitate the placing of the curl pin, allowing the pin to more readily slide over the hair curl coil as the pin is being slid to position. The slight downward declination of arm 3 tip acts as a retainer for the hair curl coil and with the bend around at 6 of extended arm 2 prevents the curl from unwinding.

Fig. 2 presents a plan perspective of the curl pin, illustrating the relationship of the upper arms 1, 2, 3 and 4 with the integral underarm 5. Figs. 2 and 3 illustrate arms 2 and 4 and the bend at 6 which continues around to become arm 5. A slight arc is formed along the extent of arm 5 from bend 6 to tip of arm 5. This are is in direct proportion to the average head curvature, i. e., about five degrees and has a dual role of allowing the pin to conform well with the scalp section 10, also the central part of arm 5 forms a pressure point at mid-position of the curl coil between 7 and 8 due to the spring action of the pin arm members. When the hair curl is initially formed, the thinnest part of the hair coil is at the center for the reason that the thickest portion of the hair strands arise from the scalp and taper olf in thickness as the terminal hair ends are reached. Therefore, in cross section, the hair coil will appear thickest across the outer ringlet and thinnest at the center. Fig. 3 shows the need for central conformity and the method whereby such is obtained by the clamp action of arm 5 toward the X arms.

I claim:

1. A hair curl pin device comprising cross arms intersecting substantially intermediate their ends and being generally in a single plane for overlying a curl coil, and an underarm extended from an end of one of the cross arms and being beneath said single plane defined by said cross arms and toward the other end of said cross arms.

2. A hair curl pin device comprising cross arms intersecting substantially intermediate their ends and being generally in a single plane for overlying a curl coil, and an underarm extended from an end of one of the cross arms and being beneath said single plane defined by said cross arms and toward the other end of said cross arms, and means to resiliently urge said underarm toward said cross arms.

3. A hair curl pin device comprising cross arms intersecting substantially intermediate their ends and being generally in a single plane for overlying a curl coil, and an underarm extended from an end of one of the cross arms and being beneath said single plane defined by said cross arms and toward the other end of said cross arms, and means to resiliently urge said underarm toward said cross arms, a fiat joint formed at the intersection of said cross arms, and said underarm being generally arcuate with its convex portion in contact with said flat joint.

4. A hair curl pin comprising cross arms intersecting substantially intermediate their ends and being generally in one plane adapted to overlie a curl coil, a return clamp arm connected at one end thereof to an end of one of said cross arms and extended generally under and parallel with said connected cross arms, said return clamp arm being arcuate with its convex side toward said cross arms, said connection between said return clamp arm and cross arm being resilient for urging said return clamp arm toward the underside of said cross arm for clamping a curl coil therebetween.

5. A hair curl pin comprising cross arms intersecting substantially intermediate their ends and being generally in one plane adapted to overlie a curl coil, a return clamp arm connected at one end thereof to an end of one of said cross arms and extended generally under and parallel with said connected cross arms, said return clamp arm being arcuate with its convex side toward said cross arms, said connection between said return clamp arm and cross arm being resilient for urging said return clamp arm toward the underside of said cross arm for clamping a curl coil therebetween, the said cross arms being arranged at such angles with respect to one another as to engage and hold the widest portion of the curl coil.

6. A hair curl pin device comprising cross arms intersecting substantially intermediate their ends and being generally in one plane adapted to overlie a curl coil, a return clamp arm connected at one end thereof to an end of one of said cross arms and extended generally under and parallel with said connected cross arms, said return clamp arm being arcuate with its convex side toward said cross arms, said connection between said return clamp arm and cross arm being resilient for urging said return clamp arm toward the underside of said cross arm for clamping a curl coil therebetween, the said cross arms being arranged at such angles with respect to one another as to engage and hold the widest portion of the curl coil, the free ends of the cross arms adjacent the free end of the return clamp arm being bent away from the plane of said return clamp arm to facilitate insertion over a curl coil.

7. A hair curl pin device comprising cross arms intersecting substantially intermediate their ends and being generally in one plane adapted to overlie a curl coil, a return clamp arm connected at one end thereof to an end of one of said cross arms and extended generally under and parallel with said connected cross arms, said return clamp arm being arcuate with its convex side toward said cross anns, said connection between said return clamp arm and cross arm being resilient for urging said return clamp arm toward the underside of said cross arm for clamping a curl coil therebetween, the said cross arms being arranged at such angles with respect to one another as to engage and hold the widest portion of the curl coil, the free ends of the cross arms adjacent the free end of the return clamp arm being bent away from the plane of said return clamp arm to facilitate insertion over a curl coil, and the free end of said return clamp arm being bent away from the plane of said cross arms.

References Cited in the file of this patent UNITED STATES PATENTS 628,596 Bates July 11, 1899 1,362,824 Schulze et al Dec. 21, 1920 1,450,239 Bechtold Apr. 3, 1923 2,121,467 Geraci June 21, 1938 2,439,436 Rothe Apr. 13, 1948 

